Analysis of Influencing Factors on the Performance of Precision Casting Wax

Hai-Qiang Zhou （ East China University of Science and Technology, Shanghai, 200237, China ）

Abstract

Precision casting wax is a key material in investment casting, and its performance determines the accuracy and surface quality of the castings. This study systematically investigates the effects of filler type, dosage, and component compatibility on the fluidity, mechanical properties, thermal stability, and dimensional accuracy of a paraffin-resin filled wax system. Results indicate that sebacic acid significantly enhances the comprehensive performance of the base wax. At a 30% dosage, the rotational viscosity reaches 504.2 mPa·s, flexural strength increases to 5.02 MPa, and linear shrinkage decreases to 0.67%. Sebacic acid regulates crystallization behavior through synergistic nucleation and volume effects, with X-ray diffraction and scanning electron microscopy confirming physical mixing and good compatibility among components. Thermal analysis reveals limited impact of filler addition on thermal stability. This research provides a theoretical foundation for the formulation design and process optimization of precision casting waxes.

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